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How to use constructors method of org.powermock.api.support.membermodification.MemberMatcher class

Best Powermock code snippet using org.powermock.api.support.membermodification.MemberMatcher.constructors

Source:MemberModificationExampleTest.java

...33import static org.junit.Assert.assertNull;34import static org.junit.Assert.assertThat;35import static org.junit.Assert.fail;36import static org.powermock.api.support.membermodification.MemberMatcher.constructor;37import static org.powermock.api.support.membermodification.MemberMatcher.constructorsDeclaredIn;38import static org.powermock.api.support.membermodification.MemberMatcher.everythingDeclaredIn;39import static org.powermock.api.support.membermodification.MemberMatcher.field;40import static org.powermock.api.support.membermodification.MemberMatcher.method;41import static org.powermock.api.support.membermodification.MemberMatcher.methods;42import static org.powermock.api.support.membermodification.MemberMatcher.methodsDeclaredIn;43import static org.powermock.api.support.membermodification.MemberModifier.replace;44import static org.powermock.api.support.membermodification.MemberModifier.stub;45import static org.powermock.api.support.membermodification.MemberModifier.suppress;46/**47 * Demonstrates PowerMock's ability to modify member structures.48 */49@RunWith(PowerMockRunner.class)50@PrepareForTest({SuppressMethod.class, SuppressField.class, SuppressEverything.class})51public class MemberModificationExampleTest {52    @Rule53    public PowerMockRule powerMockRule = new PowerMockRule();54    @Test55    public void suppressSingleMethodExample() throws Exception {56        suppress(method(SuppressMethod.class, "getObject"));57        assertNull(new SuppressMethod().getObject());58    }59    @Test60    public void suppressMultipleMethodsExample1() throws Exception {61        suppress(methods(SuppressMethod.class, "getObject", "getInt"));62        assertNull(new SuppressMethod().getObject());63        assertEquals(0, new SuppressMethod().getInt());64    }65    @Test66    public void suppressMultipleMethodsExample2() throws Exception {67        suppress(methods(method(SuppressMethod.class, "getObject"), method(SuppressMethod.class, "getInt")));68        assertNull(new SuppressMethod().getObject());69        assertEquals(0, new SuppressMethod().getInt());70    }71    @Test72    public void suppressAllMethodsExample() throws Exception {73        suppress(methodsDeclaredIn(SuppressMethod.class));74        final SuppressMethod tested = new SuppressMethod();75        assertNull(tested.getObject());76        assertNull(SuppressMethod.getObjectStatic());77        assertEquals(0, tested.getByte());78    }79    @Test80    public void suppressSingleFieldExample() throws Exception {81        suppress(field(SuppressField.class, "domainObject"));82        SuppressField tested = new SuppressField();83        assertNull(tested.getDomainObject());84    }85    @Test86    public void suppressConstructorExample() throws Exception {87        suppress(constructor(SuppressConstructorHierarchy.class));88        SuppressConstructorHierarchy tested = new SuppressConstructorHierarchy("message");89        assertEquals(42, tested.getNumber());90        assertNull(tested.getMessage());91    }92    @Test93    public void stubSingleMethodExample() throws Exception {94        final String expectedReturnValue = "new";95        stub(method(SuppressMethod.class, "getObject")).toReturn(expectedReturnValue);96        final SuppressMethod tested = new SuppressMethod();97        assertEquals(expectedReturnValue, tested.getObject());98        assertEquals(expectedReturnValue, tested.getObject());99    }100    @Test101    public void duckTypeStaticMethodExample() throws Exception {102        replace(method(SuppressMethod.class, "getObjectStatic")).with(103                method(StaticAndInstanceDemo.class, "getStaticMessage"));104        assertEquals(SuppressMethod.getObjectStatic(), StaticAndInstanceDemo.getStaticMessage());105    }106    @Test107    public void whenReplacingMethodWithAMethodOfIncorrectReturnTypeThenAnIAEIsThrown() throws Exception {108        try {109            replace(method(SuppressMethod.class, "getObjectStatic")).with(110                    method(StaticAndInstanceDemo.class, "aVoidMethod"));111            fail("Should thow IAE");112        } catch (Exception e) {113            assertEquals("The replacing method (public static void samples.staticandinstance.StaticAndInstanceDemo.aVoidMethod()) needs to return java.lang.Object and not void.", e.getMessage());114        }115    }116    @Test117    public void whenReplacingMethodWithAMethodOfWithIncorrectParametersThenAnIAEIsThrown() throws Exception {118        try {119            replace(method(SuppressMethod.class, "getObjectStatic")).with(120                    method(StaticAndInstanceDemo.class, "aMethod2"));121            fail("Should thow IAE");122        } catch (Exception e) {123            assertEquals("The replacing method, \"public static java.lang.Object samples.staticandinstance.StaticAndInstanceDemo.aMethod2(java.lang.String)\", needs to have the same number of parameters of the same type as as method \"public static java.lang.Object samples.suppressmethod.SuppressMethod.getObjectStatic()\".", e.getMessage());124        }125    }126    @Test127    public void changingReturnValueExample() throws Exception {128        replace(method(SuppressMethod.class, "getObjectWithArgument")).with(new ReturnValueChangingInvocationHandler());129        final SuppressMethod tested = new SuppressMethod();130        assertThat(tested.getObjectWithArgument("don't do anything"), is(instanceOf(Object.class)));131        assertEquals("hello world", tested.getObjectWithArgument("make it a string"));132    }133    @Test134    public void suppressAllConstructors() throws Exception {135        suppress(constructorsDeclaredIn(SuppressEverything.class));136        SuppressEverything suppressEverything = new SuppressEverything();137        new SuppressEverything("test");138        try {139            suppressEverything.something();140            fail("Should throw ISE");141        } catch (IllegalStateException e) {142            assertEquals("error", e.getMessage());143        }144    }145    @Test146    public void suppressEverythingExample() throws Exception {147        suppress(everythingDeclaredIn(SuppressEverything.class));148        SuppressEverything suppressEverything = new SuppressEverything();149        new SuppressEverything("test");...

Source:PowerMockSuppressingUnwantedBehaviorTest.java

...16/**17 * <pre>18 *19 * 1. Use the @RunWith(PowerMockRunner.class) annotation at the class-level of the test case.20 * 2. Use the @PrepareForTest(ClassWithEvilParentConstructor.class) annotation at the class-level of the test case in combination with suppress(constructor(EvilParent.class)) to suppress all constructors for the EvilParent class.21 * 3. Use the Whitebox.newInstance(ClassWithEvilConstructor.class) method to instantiate a class without invoking the constructor what so ever.22 * 4. Use the @SuppressStaticInitializationFor("org.mycompany.ClassWithEvilStaticInitializer") annotation to remove the static initializer for the the org.mycompany.ClassWithEvilStaticInitializer class.23 * 5. Use the @PrepareForTest(ClassWithEvilMethod.class) annotation at the class-level of the test case in combination with suppress(method(ClassWithEvilMethod.class, "methodName")) to suppress the method with name "methodName" in the ClassWithEvilMethod class.24 * 6. Use the @PrepareForTest(ClassWithEvilField.class) annotation at the class-level of the test case in combination with suppress(field(ClassWithEvilField.class, "fieldName")) to suppress the field with name "fieldName" in the ClassWithEvilField class.25 * </pre>26 * éè¦å ä¸ä¸é¢ä¸¤ä¸ªæ³¨è§£27 *28 * @author shaoyijiong29 * @date 2021/8/2230 */31@RunWith(PowerMockRunner.class)32@PrepareForTest({ExampleWithEvilParent.class, ExampleWithEvilMethod.class})33@SuppressStaticInitializationFor("powermock.ExampleWithEvilStaticInitializer")34public class PowerMockSuppressingUnwantedBehaviorTest {...

Source:MyClass2Test.java

...4import org.powermock.core.classloader.annotations.PrepareForTest;5import org.powermock.modules.junit4.PowerMockRunner;6import static org.junit.Assert.assertNull;7import static org.powermock.api.support.membermodification.MemberMatcher.constructor;8import static org.powermock.api.support.membermodification.MemberMatcher.constructorsDeclaredIn;9import static org.powermock.api.support.membermodification.MemberMatcher.everythingDeclaredIn;10import static org.powermock.api.support.membermodification.MemberMatcher.methodsDeclaredIn;11import static org.powermock.api.support.membermodification.MemberModifier.suppress;12@PrepareForTest(MyClass2.class)13@RunWith(PowerMockRunner.class)14public class MyClass2Test {15    @Test16    public void testSupressingConstructorMethod() throws Exception {17        suppress(constructor(MyClass2.class));18        assertNull(new MyClass2().getStr());19    }20    @Test21    public void testSupressingAllConstructorMethod() throws Exception {22        suppress(constructorsDeclaredIn(MyClass2.class));23        assertNull(new MyClass2("test").getStr());24    }25    @Test26    public void testSupressingAllMethods() throws Exception {27        suppress(methodsDeclaredIn(MyClass2.class));28        assertNull(new MyClass2("test").getStr());29    }30    @Test31    public void testSupressingEntireClass() throws Exception {32        suppress(everythingDeclaredIn(MyClass2.class));33        assertNull(new MyClass2("test").getStr());34    }35}...

constructors

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import org.junit.Test;3import org.junit.runner.RunWith;4import org.powermock.api.support.membermodification.MemberMatcher;5import org.powermock.core.classloader.annotations.PrepareForTest;6import org.powermock.modules.junit4.PowerMockRunner;7import java.lang.reflect.Method;8import static org.junit.Assert.assertEquals;9import static org.powermock.api.support.membermodification.MemberMatcher.method;10import static org.powermock.api.support.membermodification.MemberModifier.suppress;11@RunWith(PowerMockRunner.class)12@PrepareForTest( { ClassWithFinalMethods.class })13public class MemberMatcherTutorialTest {14	public void testSuppressFinalMethod() throws Exception {15		ClassWithFinalMethods mock = new ClassWithFinalMethods();16		Method method = MemberMatcher.method(ClassWithFinalMethods.class,17				"finalMethod");18		suppress(method);19		assertEquals("finalMethod", mock.finalMethod());20	}21	public void testSuppressFinalMethodWithPowerMock() throws Exception {22		ClassWithFinalMethods mock = new ClassWithFinalMethods();23		Method method = method(ClassWithFinalMethods.class, "finalMethod");24		suppress(method);25		assertEquals("finalMethod", mock.finalMethod());26	}27	public void testSuppressFinalMethodWithPowerMockAndStaticImport()28			throws Exception {29		ClassWithFinalMethods mock = new ClassWithFinalMethods();30		suppress(method(ClassWithFinalMethods.class, "finalMethod"));31		assertEquals("finalMethod", mock.finalMethod());32	}33}34package org.powermock.examples.tutorial.membermodification;35public class ClassWithFinalMethods {36	public final String finalMethod() {37		return "finalMethod";38	}39}40package org.powermock.examples.tutorial.membermodification;41public class ClassWithStaticMethods {42	public static String staticMethod() {43		return "staticMethod";44	}45}46package org.powermock.examples.tutorial.membermodification;47public class ClassWithPrivateMethods {48	private String privateMethod() {49		return "privateMethod";50	}51}52package org.powermock.examples.tutorial.membermodification;53public class ClassWithPackagePrivateMethods {54	String packagePrivateMethod() {55		return "packagePrivateMethod";56	}57}58package org.powermock.examples.tutorial.membermodification;59public class ClassWithProtectedMethods {60	protected String protectedMethod() {

constructors

Using AI Code Generation

1import org.powermock.api.support.membermodification.MemberMatcher;2import org.powermock.core.classloader.annotations.PrepareForTest;3import org.powermock.modules.junit4.PowerMockRunner;4import static org.powermock.api.support.membermodification.MemberModifier.suppress;5import static org.powermock.api.support.membermodification.MemberModifier.stub;6import java.lang.reflect.Method;7import org.junit.Test;8import org.junit.runner.RunWith;9import org.mockito.Mockito;10@RunWith(PowerMockRunner.class)11@PrepareForTest({Class.class})12public class ClassTest {13    public void test() throws Exception {14        Class mock = Mockito.mock(Class.class);15        Method method = MemberMatcher.method(Class.class, "toString");16        suppress(method);17        System.out.println(mock.toString());18    }19}

constructors

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import static org.powermock.api.support.membermodification.MemberMatcher.constructor;3import static org.powermock.api.support.membermodification.MemberModifier.suppress;4public class Example4 {5    public void testSuppressConstructor() throws Exception {6        suppress(constructor(Foo.class, String.class));7    }8    public class Foo {9        public Foo(String str) {10            throw new RuntimeException("This constructor should be suppressed");11        }12    }13}14package org.powermock.examples.tutorial.membermodification;15import static org.powermock.api.support.membermodification.MemberMatcher.constructor;16import static org.powermock.api.support.membermodification.MemberModifier.suppress;17public class Example5 {18    public void testSuppressConstructor() throws Exception {19        suppress(constructor(Foo.class, String.class));20    }21    public class Foo {22        public Foo(String str) {23            throw new RuntimeException("This constructor should be suppressed");24        }25    }26}27package org.powermock.examples.tutorial.membermodification;28import static org.powermock.api.support.membermodification.MemberMatcher.constructor;29import static org.powermock.api.support.membermodification.MemberModifier.suppress;30public class Example6 {31    public void testSuppressConstructor() throws Exception {32        suppress(constructor(Foo.class, String.class));33    }34    public class Foo {35        public Foo(String str) {36            throw new RuntimeException("This constructor should be suppressed");37        }38    }39}40package org.powermock.examples.tutorial.membermodification;41import static org.powermock.api.support.membermodification.MemberMatcher.constructor;42import static org.powermock.api.support.membermodification.MemberModifier.suppress;43public class Example7 {44    public void testSuppressConstructor() throws Exception {45        suppress(constructor(Foo.class, String.class));46    }47    public class Foo {48        public Foo(String str) {49            throw new RuntimeException("This constructor should be suppressed");50        }51    }52}53package org.powermock.examples.tutorial.membermodification;54import static org.powermock.api.support.membermodification.MemberMatcher.constructor;55import static org

constructors

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import static org.powermock.api.support.membermodification.MemberMatcher.constructor;3import static org.powermock.api.support.membermodification.MemberModifier.suppress;4import org.junit.Test;5import org.junit.runner.RunWith;6import org.powermock.core.classloader.annotations.PrepareForTest;7import org.powermock.modules.junit4.PowerMockRunner;8@RunWith(PowerMockRunner.class)9@PrepareForTest(Example.class)10public class ExampleTest {11	public void testSuppressConstructor() throws Exception {12		suppress(constructor(Example.class));13		new Example();14	}15}16package org.powermock.examples.tutorial.membermodification;17import static org.powermock.api.support.membermodification.MemberMatcher.constructor;18import static org.powermock.api.support.membermodification.MemberModifier.suppress;19import org.junit.Test;20import org.junit.runner.RunWith;21import org.powermock.core.classloader.annotations.PrepareForTest;22import org.powermock.modules.junit4.PowerMockRunner;23@RunWith(PowerMockRunner.class)24@PrepareForTest(Example.class)25public class ExampleTest {26	public void testSuppressConstructor() throws Exception {27		suppress(constructor(Example.class));28		new Example();29	}30}31package org.powermock.examples.tutorial.membermodification;32import static org.powermock.api.support.membermodification.MemberMatcher.constructor;33import static org.powermock.api.support.membermodification.MemberModifier.suppress;34import org.junit.Test;35import org.junit.runner.RunWith;36import org.powermock.core.classloader.annotations.PrepareForTest;37import org.powermock.modules.junit4.PowerMockRunner;38@RunWith(PowerMockRunner.class)39@PrepareForTest(Example.class)40public class ExampleTest {41	public void testSuppressConstructor() throws Exception {42		suppress(constructor(Example.class));43		new Example();44	}45}46package org.powermock.examples.tutorial.membermodification;47import static org.powermock.api.support.membermodification.MemberMatcher.constructor;48import

constructors

Using AI Code Generation

1import org.powermock.api.support.membermodification.MemberMatcher;2import org.powermock.api.support.membermodification.MemberModifier;3import org.powermock.core.classloader.annotations.PrepareForTest;4import org.powermock.modules.junit4.PowerMockRunner;5import org.junit.Test;6import org.junit.runner.RunWith;7import static org.junit.Assert.*;8import static org.powermock.api.mockito.PowerMockito.*;9import java.lang.reflect.Constructor;10import java.lang.reflect.Method;11import java.lang.reflect.Field;12import java.lang.reflect.Modifier;13class TestClass {14    public int num1;15    public static int num2;16    public TestClass(int num1, int num2) {17        this.num1 = num1;18        this.num2 = num2;19    }20    public int getNum1() {21        return num1;22    }23    public static int getNum2() {24        return num2;25    }26    public void setNum1(int num1) {27        this.num1 = num1;28    }29    public static void setNum2(int num2) {30        TestClass.num2 = num2;31    }32}33@RunWith(PowerMockRunner.class)34@PrepareForTest({TestClass.class})35public class TestPowerMock {36    public void testConstructor() throws Exception {37        Constructor constructor = MemberMatcher.constructor(TestClass.class, int.class, int.class);38        TestClass testClass = (TestClass) constructor.newInstance(1, 2);39        assertNotNull(constructor);40        assertNotNull(testClass);41        assertEquals(testClass.getNum1(), 1);42        assertEquals(testClass.getNum2(), 2);43    }44    public void testField() throws Exception {45        TestClass testClass = new TestClass(1, 2);

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